Toro Reelmaster 3100-D Service Manual page 157

Removing the Piston Pump/Hydrostat (continued)
Installing the Piston Pump/Hydrostat
Reelmaster ® 3100-D/3105-D
20252SL Rev A
g345926
1. Piston pump/hydrostat case drain
13. Remove both socket head screws and flat washers securing gear pump to
the piston pump. Separate gear pump from the piston pump. Locate and
retrieve O−ring. Plug openings of gear pump to prevent contamination.
14. Remove pump pulley from the taper lock bushing on the piston pump shaft:
A. Remove three (3) cap screws and lock washers securing pulley to the
taper lock bushing.
Excessive or unequal pressure on the cap screws can break the
bushing flange.
B. Insert cap screws into threaded removal holes of the pulley. Tighten
screws progressively and evenly until the pulley is loose on the bushing.
Remove pulley from the bushing.
15. Loosen set screw that secures taper lock bushing to piston pump shaft.
Remove bushing from the pump shaft. Locate and retrieve key from pump
shaft.
16. Remove both cap screws and washers that secure piston pump to pump
support. Locate and retrieve spacers.
17. Remove lock nuts, flat washers and cap screws that secure the piston pump
to the pump mount plate. Remove pump from plate.
18. If hydraulic fittings are to be removed from piston pump, mark fitting
orientation to allow correct assembly. Remove hydraulic fittings and O−rings
from the piston pump as needed. Discard removed O−rings.
1. Position and secure piston pump to the pump mount plate with cap screws,
flat washers and lock nuts.
2. Lubricate and place new O−rings onto all removed pump fittings. Install
fittings into pump openings using marks made during the removal process to
properly orientate fittings. Tighten fittings (see
(SAE Straight Thread O-Ring Fittings) (page
Figure 69
2. Gear pump suction port
IMPORTANT
Page 5–81
Installing the Hydraulic Fittings
5–8)).
Hydraulic System: Service and Repairs